@import 'typography-utils';

// Represents a typography level from the Material design spec.
@function mat-typography-level($font-size, $line-height: $font-size, $font-weight: 400) {
  @return (
    font-size: $font-size,
    line-height: $line-height,
    font-weight: $font-weight
  );
}

// Represents a collection of typography levels.
// Defaults come from https://material.io/guidelines/style/typography.html
@function mat-typography-config(
  $font-family: 'Roboto, sans-serif',
  $display-4:   mat-typography-level(112px, 112px, 300),
  $display-3:   mat-typography-level(56px, 56px, 400),
  $display-2:   mat-typography-level(45px, 48px, 400),
  $display-1:   mat-typography-level(34px, 40px, 400),
  $headline:    mat-typography-level(24px, 32px, 400),
  $title:       mat-typography-level(20px, 20px, 500),
  $subheading:  mat-typography-level(16px, 28px, 400),
  $body-2:      mat-typography-level(14px, 24px, 500),
  $body-1:      mat-typography-level(14px, 20px, 400),
  $caption:     mat-typography-level(12px, 12px, 400),
  $button:      mat-typography-level(14px, 14px, 500)
) {
  @return (
    font-family: $font-family,
    display-4:   $display-4,
    display-3:   $display-3,
    display-2:   $display-2,
    display-1:   $display-1,
    headline:    $headline,
    title:       $title,
    subheading:  $subheading,
    body-2:      $body-2,
    body-1:      $body-1,
    caption:     $caption,
    button:      $button
  );
}

// Adds the base typography styles, based on a config.
@mixin mat-typography($config: mat-typography-config(), $selector: '.mat-typography') {
  .mat-h0, .mat-hero-header {
    @include mat-typography-level-to-styles($config, display-4);
  }

  .mat-h1, #{$selector} h1 {
    @include mat-typography-level-to-styles($config, display-3);
  }

  .mat-h2, #{$selector} h2 {
    @include mat-typography-level-to-styles($config, display-2);
  }

  .mat-h3, #{$selector} h3 {
    @include mat-typography-level-to-styles($config, display-1);
  }

  .mat-h4, #{$selector} h4 {
    @include mat-typography-level-to-styles($config, headline);
  }

  .mat-h5, #{$selector} h5 {
    @include mat-typography-level-to-styles($config, title);
  }

  .mat-h6, #{$selector} h6 {
    @include mat-typography-level-to-styles($config, subheading);
  }

  .mat-body-strong {
    @include mat-typography-level-to-styles($config, body-2);
  }

  .mat-body, #{$selector} {
    @include mat-typography-level-to-styles($config, body-1);
  }

  .mat-small {
    @include mat-typography-level-to-styles($config, caption);
  }
}
